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SUSE 15 SP2: SUSE-SU-2021:0842-1 Critical: Kernel Remote Code Execution

suse
Calendar Grey March 17, 2021
Dist Suse Esm H88
Red Hat has released a Security Update to tackle multiple vulnerabilities in the Fedora Kernel Live Patch 28 for RHEL 8; essential patch is now accessible.
An update that solves three vulnerabilities and has one errata is now available

Summary

This update for the Linux Kernel 5.3.18-24_37 fixes several issues. The following security issues were fixed: - CVE-2020-29368: Fixed an issue in copy-on-write implementation which could have granted unintended write access because of a race condition in a THP mapcount check (bsc#1179664). - Fixed an issue where NFS client filesystems got unmounted on fail-over (bsc#1182468). - CVE-2021-3347: Fixed a use-after-free in the PI futexes during fault handling, allowing local users to execute code in the kernel (bsc#1181553). - CVE-2020-28374: Fixed insufficient identifier checking in the LIO SCSI target code which could have been used by remote attackers to read or write files via directory traversal in an XCOPY request (bsc#1178684). Patch Instructions:

Topics%20covered

Topics Covered

security advisory remote code execution critical update important SUSE Linux Enterprise Linux Kernel Patch SLE 15

References

#1178684 #1179664 #1181553 #1182468

Cross- CVE-2020-28374 CVE-2020-29368 CVE-2021-3347

CVSS scores:

CVE-2020-28374 (NVD) : 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVE-2020-28374 (SUSE): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVE-2020-29368 (NVD) : 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2020-29368 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-3347 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-3347 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products:

SUSE Linux Enterprise Module for Live Patching 15-SP2

https://www.suse.com/security/cve/CVE-2020-28374.html

https://www.suse.com/security/cve/CVE-2020-29368.html

Severity
critical
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Announcement ID: SUSE-SU-2021:0842-1
Rating: important

Topics%20covered

Topics Covered

security advisory remote code execution critical update important SUSE Linux Enterprise Linux Kernel Patch SLE 15

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